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Analog Devices Inc. AD7416AR-REEL7
- Part No.:
- AD7416AR-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog and Digital Output
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD7416AR-REEL7.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,016
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Product details
Overview
AD7416AR-REEL7 from Analog Devices is a 10-bit digital temperature sensor IC with I²C interface, on-chip temperature sensing (−40°C to +125°C), ±2°C accuracy over full range, 40 μs conversion time, and open-drain overtemperature indicator (OTI) output. It operates from 2.7 V to 5.5 V and serves as a dedicated ambient temperature monitor in space-constrained thermal management systems.
For engineers reviewing the AD7416AR-REEL7 datasheet, AD7416AR-REEL7 pinout, AD7416AR-REEL7 application, or AD7416AR-REEL7 equivalent, this page delivers verified technical context, real-world use cases, pin-level design meaning, and validated alternative options for thermal monitoring in industrial, automotive, and computing systems.
Technical Context
The AD7416AR-REEL7 integrates a successive approximation ADC, bandgap-based temperature sensor, I²C serial interface, and programmable OTI comparator-no external reference or clock required. Its Channel 0 is hardwired to the on-die sensor, and conversion is triggered automatically on I²C read/write or via CONVST pulse.
It features a fault queue counter to suppress spurious OTI activation, configurable OTI polarity (active-high/low) and mode (comparator/interrupt), and automatic power-down after conversion-reducing typical supply current to 0.2–1.5 μA in shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit ADC output; provides 0.25°C temperature resolution per LSB. |
| Temperature Range | −40°C to +125°C operational range; supports harsh-environment thermal monitoring. |
| Accuracy | ±2.0°C (−25°C to +100°C); ±3.0°C (−40°C to +125°C); enables reliable threshold-based thermal control. |
| Conversion Time | 40 μs max for temperature measurement; ensures rapid thermal response in closed-loop systems. |
| Supply Voltage | 2.7 V to 5.5 V; compatible with 3.3 V and 5 V logic domains without level-shifting. |
| Interface | I²C-compatible 2-wire serial bus; supports up to 8 devices on one bus via A0/A1/A2 address pins. |
| OTI Output | Open-drain overtemperature indicator; asserts when sensed temperature exceeds TOTI register value. |
Pinout & Package
AD7416AR-REEL7 is housed in an 8-lead SOIC package (body width 3.9 mm, JEDEC MS-012), RoHS-compliant and tape-and-reel packaged (REEL7 = 1000-unit reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDA) | I²C bidirectional data line | Push-pull output; connects directly to microcontroller SDA; requires external pull-up resistor. |
| 2 (SCL) | I²C clock input | Drives internal timing for register access; synchronizes all I²C read/write operations. |
| 3 (OTI) | Overtemperature indicator output | Open-drain logic signal; sinks current when temperature exceeds programmed TOTI threshold. |
| 4 (GND) | Analog/digital ground reference | Common return for internal track-and-hold, comparator, DAC, and digital circuitry. |
| 5 (A2) | Serial address MSB input | Configures device I²C address (bit A2); enables up to 8 AD7416 units on same bus. |
| 6 (A1) | Serial address middle bit input | Configures device I²C address (bit A1); used with A0/A2 for unique 3-bit slave address. |
| 7 (A0) | Serial address LSB input | Configures device I²C address (bit A0); sets final I²C address bits (0x48–0x4F). |
| 8 (VDD) | Positive supply voltage | Accepts 2.7 V–5.5 V; powers all analog and digital blocks; requires local 0.1 µF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip temperature sensor | Direct die-temperature measurement (−40°C to +125°C) with no external components required. |
| Programmable OTI thresholds | TOTI and THYST registers allow hysteresis-based thermal alerting (e.g., trip at 80°C, reset at 75°C). |
| Fault queue filtering | Configurable counter prevents false OTI triggers by requiring multiple out-of-limit readings before assertion. |
| Auto power-down | Enters low-power state (<1.5 μA) automatically after conversion, reducing average system power. |
| I²C address flexibility | A0/A1/A2 inputs support 8 unique addresses (0x48–0x4F), enabling multi-sensor thermal mapping on one bus. |
Applications
| Server CPU Thermal Monitoring | Automotive Cabin Temperature Control |
|---|---|
Use Scenario: Real-time die temperature tracking of x86 or ARM processors in rack-mounted servers to prevent thermal throttling or shutdown. IC Role / Device Role / Timing Role: Dedicated temperature sensor feeding thermal management firmware; updates every 400 μs (tR) with 40 μs latency. Use Value: Enables precise, low-overhead thermal feedback without consuming MCU ADC resources or requiring external signal conditioning. | Use Scenario: Cabin air temperature sensing in HVAC control modules for automatic fan speed and blend door actuation. IC Role / Device Role / Timing Role: Ambient temperature transducer interfacing to automotive MCU via I²C; operates across −40°C to +125°C under hood/cabin conditions. Use Value: Eliminates need for discrete thermistor + ADC solution; reduces BOM count and improves long-term calibration stability. |
| Industrial PLC Temperature Alarms | Lithium-Ion Battery Pack Protection |
Use Scenario: Overtemperature detection in programmable logic controller enclosures during high-load operation or cooling failure. IC Role / Device Role / Timing Role: Standalone thermal watchdog with OTI output directly driving relay or shutdown logic in safety-critical subsystems. Use Value: Provides hardware-level fail-safe response independent of firmware execution-critical for SIL-2/IEC 61508 compliance. | Use Scenario: Cell-level temperature monitoring in multi-cell battery packs to prevent thermal runaway during fast charging. IC Role / Device Role / Timing Role: Local temperature node on battery management system (BMS) I²C bus; reports temperature to host controller every 400 μs. Use Value: Supports tight thermal guardbanding (±2°C accuracy) and fast OTI assertion (<6 ms delay) for immediate charge interruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature-monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM75BIMM-3/NOPB | 9-bit resolution; ±2°C accuracy over −25°C to +100°C; no fault queue; fixed 75°C/65°C default thresholds. | Lacks programmable hysteresis and fault filtering; suitable only for basic overtemp alerts-not precision thermal control. | Select LM75BIMM-3/NOPB only if cost sensitivity outweighs resolution, accuracy, and noise immunity requirements. |
| MAX31820 | 1-Wire interface; 12-bit resolution; ±0.5°C accuracy; parasitic power capable; no OTI output. | Requires single-wire bus infrastructure; no hardware interrupt-relies on polled reads; better accuracy but slower update rate (~100 ms). | Choose MAX31820 when wiring simplicity (single conductor + GND) and higher accuracy justify longer conversion latency and loss of direct OTI signaling. |
Compared with LM75BIMM-3/NOPB, AD7416AR-REEL7 offers finer resolution, wider temperature range, and robust noise-immune OTI triggering; versus MAX31820, it delivers faster response, deterministic I²C timing, and hardware interrupt capability-making it optimal for real-time thermal safety systems.
Availability
AD7416AR-REEL7 is available at Aetrix Electronics and suitable for industrial process control, automotive cabin monitoring, and server thermal management requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for AD7416AR-REEL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD7416AR-REEL7 belongs to Analog Devices' precision temperature sensor product line, designed specifically for embedded thermal monitoring where accuracy, speed, and hardware-level fault signaling are critical.
FAQ
What is the operating temperature range of the AD7416AR-REEL7?
The AD7416AR-REEL7 operates across −40°C to +125°C. Its on-chip temperature sensor maintains ±2.0°C accuracy from −25°C to +100°C and ±3.0°C accuracy over the full range, making AD7416AR-REEL7 suitable for under-hood automotive, industrial control, and high-density computing environments where ambient extremes occur.
Does the AD7416AR-REEL7 require an external reference voltage?
No, the AD7416AR-REEL7 does not require an external reference. It contains an internal 2.5 V reference optimized for the on-die temperature sensor and ADC. The REFIN pin is not present on the AD7416AR-REEL7 (unlike AD7417/AD7418), confirming its fixed-reference, temperature-only architecture-simplifying layout and reducing BOM count for AD7416AR-REEL7 deployments.
How does the OTI output function on the AD7416AR-REEL7?
The OTI (Overtemperature Indicator) output on AD7416AR-REEL7 is an open-drain signal that asserts low when the measured temperature exceeds the value stored in the TOTI register. It resets automatically after an I²C read operation. AD7416AR-REEL7 supports programmable hysteresis (THYST register) and a fault queue counter to prevent false triggers-enabling reliable hardware-level thermal shutdown without MCU intervention.
Can multiple AD7416AR-REEL7 devices share the same I²C bus?
Yes, up to eight AD7416AR-REEL7 devices can operate on a single I²C bus. Each unit's address is set via the A0, A1, and A2 pins, allowing selection of any of eight unique 7-bit slave addresses (0x48–0x4F). This enables distributed thermal sensing across PCBs or enclosures while minimizing GPIO usage and bus overhead for AD7416AR-REEL7 networks.
What is the conversion time and update rate for temperature readings on the AD7416AR-REEL7?
The AD7416AR-REEL7 completes a temperature conversion in ≤40 μs. Its update rate (tR) is 400 μs-meaning new data is available every 400 μs when operating in continuous conversion mode. This timing is fixed and independent of I²C bus speed, ensuring deterministic thermal sampling for real-time control loops using AD7416AR-REEL7.
AD7416AR-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 10 b
- Features:
- Output Switch, Programmable Limit, Shutdown Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- -25°C ~ 100°C (-40°C ~ 125°C)
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
AD7416AR-REEL7 FAQ
1.How can I place an order for AD7416AR-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7416AR-REEL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD7416AR-REEL7 reliable?
The price and inventory of AD7416AR-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7416AR-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7416AR-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7416AR-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7416AR-REEL7?
AD7416AR-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7416AR-REEL7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD7416AR-REEL7?
For technical support, including AD7416AR-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7416AR-REEL7 requirements.
6.How does Aetrix verify that AD7416AR-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7416AR-REEL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD7416AR-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7416AR-REEL7?
All AD7416AR-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7416AR-REEL7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD7416AR-REEL7 part is unused and in its original packaging.
Return procedure for AD7416AR-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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